Porting Java Virtual Machine in Embedded Systems Based on Qt4

The existing Java Virtual Machine (JVM) based on Qt3 can not meet the requirements of the user experience in the field of digital television. By means of analyzing the functional blocks of abstract windowing toolkit (AWT) and the features of Qt4, this article gives an implementation of the JVM using Qt4 and illustrates the implementation details and improved algorithms of three blocks, i.e. components, graphic, and event processing. Finally, evaluation of the JVM ported on platforms indicates the good performance.